This item is used as wedding rings replacement when you do exercises at outdoors. It is made of silicone material which is waterproof so that you can even wear it when or dive. It is very flexible don’t need to worry that it will cause any uncomfortable or make your finger . Features - Color: Dark Gray. - Size 7: 1.73cm / 0.68inch(diameter); 5.43cm / 2.14inch(circumference). - Size 8: 1.81cm / 0.71inch(diameter); 5.72cm / 2.25inch(circumference). - Size 9: 1.89cm / 0.74inch(diameter); 5.95cm / 2.34inch(circumference). - Size 10: 1.98cm / 0.78inch(diameter); 6.21cm / 2.44inch(circumference). - Size 11: 2.06cm / 0.81inch(diameter); 6.46cm / 2.54inch(circumference). - Size 12: 2.14cm / 0.84inch(diameter); 6.72cm / 2.65inch(circumference). - Size 13: 2.22cm / 0.87inch(diameter); 6.97cm / 2.74inch(circumference). - Size 14: 2.30cm / 0.91inch(diameter); 7.22cm / 2.84inch(circumference). - Material: Silicone. - Adopting ergonomic design concept,avoid keeping water within the rings and prevent sweating. - Breathable and flexible, don’t worry to get mark even wearing for a long time. - Classical color and tire pattern design, shows your charm and style but . - Made of grade silicone, comfortable,smooth and definitely safe even for skin. - Not to be from heavy or strenuous exercise like workout, swimming, weight lifting,etc. Package list: 1 x silicone ring